A) 23 B) 60 C) 51 D) 50
A) 1 B) 17 C) 7 D) 3
A) 103 B) 5 C) 45 D) 9
A) 15 B) 4 C) 33 D) 3
A) Alkaline Earth Metals B) Halogens C) Noble Gases D) Alkaline Metals
A) 14 B) 7 C) 2 D) 14.007
A) 2 B) 6 C) 137 D) 56
A) 7 B) 6 C) 2 D) 1
A) Phosphorus is a non-metal gas. B) Mercury is a solid metal. C) Chlorine is a liquid non-metal. D) Tellurium is a solid metalloid.
A) 42 B) 96 C) 5 D) 6
A) 7 B) 3 C) 4 D) 2
A) Bohr B) Dalton C) Thomson D) Rutherford
A) Thomson B) Rutherford C) Dalton D) Bohr
A) Dalton B) Bohr C) Rutherford D) Thomson
A) Thomson B) Bohr C) Rutherford D) Dalton
A) Dalton, Thomson, Rutherford, Bohr B) Bohr, Rutherford, Dalton, Thomson C) Dalton, Thomson, Bohr, Rutherford D) Dalton, Rutherford, Thomson, Bohr
A) proton = negative, electron = positive, neutron = no charge B) proton = positive, electron = neutral, neutron = negative C) proton = positive, neutron = negative, electron = no charge D) proton = positive, electron = negative, neutron = uncharged
A) chemical change B) physical change C) chemical property D) physical property
A) protons and neutrons B) protons and electrons C) neutrons and electrons D) protons and orbits
A) Phosphorus and Silicon B) Carbon and Boron C) Argon and Krypton D) Mercury and Thallium
A) Thomson's Model B) Bohr's Model C) Dalton's Model D) Rutherford's Model E) Electron Cloud
A) the atom is a positively charged sphere with electrons embedded in it B) electrons orbit totally randomly around the nucleus C) the atom is mostly empty space D) atoms are tiny solid spheres
A) nucleus B) region C) period D) group
A) Magnesium B) Lithium C) Chlorine D) Beryllium
A) Period Number B) Number of Neutrons C) State of Matter D) Group Number
A) number of neutrons B) number of protons C) period number D) group number
A) the same as the number of energy levels B) greater than the mass number C) the same as the number of electrons D) the mass number minus the atomic number
A) Period Number B) Number of Neutrons C) State of Matter D) Group Number
A) Carbon B) Francium C) Manganese D) Nitrogen
A) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity. B) Yes, some Carbon atoms have 6 protons, some have 7 protons. |